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Beyond Brains: Slime Moulds Challenge Intelligence
8 Sep
Summary
- Slime moulds exhibit complex behaviors like solving mazes.
- Debate rages on whether slime moulds possess intelligence.
- New theories suggest cognition isn't limited to animals.
The question of whether slime moulds, seemingly simple organisms, exhibit intelligence is sparking a significant scientific and philosophical debate. Historically dismissed as mere "protoplasm," species like Physarum polycephalum are now demonstrating surprising capabilities.
Experiments have shown these single-celled organisms solving mazes and efficiently mapping networks, akin to the Tokyo railway system. These findings prompt researchers like Toshiyuki Nakagaki to suggest that dictionaries may need revision.
This challenges the long-held view that intelligence requires neurons and a brain. Proponents of "biogenic" theories argue that traits like cognition might be intrinsic to all life, including plants and microbes.
However, this perspective faces strong opposition from "neuropurists," who view such claims as sacrilegious. They contend that applying terms like "cognition" to brainless organisms dilutes their meaning and misleads the public.
Scientists are grappling with defining intelligence, a concept that has evolved significantly since the 17th century. The emergence of AI further complicates these discussions, blurring lines between biological and artificial intelligence.
Ultimately, understanding the complex behaviors of organisms like slime moulds may reveal more about the limitations of human language than about the organisms themselves, pushing for a broader appreciation of life's diverse forms.
